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Hprose is a High Performance Remote Object Service Engine. It is a modern, lightweight, cross-language, cross-platform, object-oriented, high performance, remote dynamic communication middleware. It is not only easy to use, but powerful. You just need a little time to learn, then you can use it to easily construct cross language cross platform distributed application system. Hprose supports many programming languages, for example: * AAuto Quicker * ActionScript * ASP * C++ * Dart * Delphi/Free Pascal * dotNET(C#, Visual Basic...) * Golang * Java * JavaScript * Node.js * Objective-C * Perl * PHP * Python * Ruby * ... Through Hprose, You can conveniently and efficiently intercommunicate between those programming languages. This project is the implementation of Hprose for Java.

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/**********************************************************\
|                                                          |
|                          hprose                          |
|                                                          |
| Official WebSite: http://www.hprose.com/                 |
|                   http://www.hprose.org/                 |
|                                                          |
\**********************************************************/
/**********************************************************\
 *                                                        *
 * FieldAccessor.java                                     *
 *                                                        *
 * FieldAccessor class for Java.                          *
 *                                                        *
 * LastModified: Apr 17, 2016                             *
 * Author: Ma Bingyao                   *
 *                                                        *
\**********************************************************/
package hprose.io.accessor;

import hprose.common.HproseException;
import static hprose.io.HproseTags.TagNull;
import hprose.io.serialize.Serializer;
import hprose.io.serialize.SerializerFactory;
import hprose.io.serialize.Writer;
import hprose.io.unserialize.Unserializer;
import hprose.io.unserialize.Reader;
import hprose.io.unserialize.UnserializerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.nio.ByteBuffer;

public final class FieldAccessor implements MemberAccessor {
    private final long offset;
    private final Class cls;
    private final Type type;
    private final Serializer serializer;
    private final Unserializer unserializer;

    public FieldAccessor(Field accessor) {
        accessor.setAccessible(true);
        offset = Accessors.unsafe.objectFieldOffset(accessor);
        type = accessor.getGenericType();
        cls = accessor.getType();
        serializer = SerializerFactory.get(cls);
        unserializer = UnserializerFactory.get(cls);
    }

    @Override
    @SuppressWarnings({"unchecked"})
    public void serialize(Writer writer, Object obj) throws IOException {
        Object value;
        try {
            value = Accessors.unsafe.getObject(obj, offset);
        }
        catch (Exception e) {
            throw new HproseException(e.getMessage());
        }
        if (value == null) {
            writer.stream.write(TagNull);
        }
        else {
            serializer.write(writer, value);
        }
    }

    @Override
    public void unserialize(Reader reader, ByteBuffer buffer, Object obj) throws IOException {
        Object value = unserializer.read(reader, buffer, cls, type);
        try {
            Accessors.unsafe.putObject(obj, offset, value);
        }
        catch (Exception e) {
            throw new HproseException(e.getMessage());
        }
    }

    @Override
    public void unserialize(Reader reader, InputStream stream, Object obj) throws IOException {
        Object value = unserializer.read(reader, stream, cls, type);
        try {
            Accessors.unsafe.putObject(obj, offset, value);
        }
        catch (Exception e) {
            throw new HproseException(e.getMessage());
        }
    }
}